aCertificated airports serve air carrier operations with aircrafts seating more than nine passengers. bUses 2016 air facility data since 2015 was not available. cLight Rail was revised beginning in 2011 and includes light rail, street car rail, and hybrid rail. dPorts handling over 250,000 short tons. eData for 2005 and 2015 are not comparable due to changes in data coverage.

LNG = liquified natural gas; U = Data are unavailable. *2005 cargo handling docks number is omitted because it is not comparable to 2015 number due to a change in data collection methodology.

Sources:

Air, Highway, Rail—As cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, tables 1-3, 1-7, and 1-28, available at https://www.bts.gov/. Pipeline—U.S. Department of Transportation, Pipeline and Hazardous Materials Administration, available at https://www.phmsa.dot.gov/. Transit—U.S. Department of Transportation, National Transit Database, available at https://www.transit.dot.gov/ntd/. Water—U.S. Army Corps of Engineers, Navigation Data Center, Transportation Facts and Information, available at http://www.navigationdatacenter.us/.